Quantum Magnetism

Vivien Zapf-Capability Leader

Marcelo Jaime
John Singleton
Ross McDonald
Oscar Ayala

Description of Capabilities

In many magnetic systems, quantum effects can dominate at low temperatures. We study magnetically insulating systems, including inorganic oxides and organo-metallics using thermal properties and electron spin resonance in pulsed magnetic fields up to 85 T down to 500 mK, and dc fields up to 20 T down to 50 mK. Fascinating phenomena can arise such as Bose-Einstein Condensation, superconductivity, and reduced dimensionality, which we chart in close collaboration with T-4 division.

Magnetoelectrics

Vivien Zapf-Capability Leader

Fedor Balakirev
Ross McDonald

Description of Capabilities

Ultra-fast pulsed magnetic fields at the National High Magnetic Field Laboratory allow very sensitive measurements of the magnetic field-induced electric polarization, down to fractions of a pC/cm2. In addition, dielectric constant measurements can be performed in DC fields up to 20 T and pulsed fields up to 85 T, and electron spin resonance can be used to probe the magnetic response of a system to an electric oscillating cavity mode. We study organo-metallic and oxide materials for magneto-electric or multiferroic behavior.